阅读说明：本技术 卷烟 (Cigarette with improved smoke exhaust ) 是由 黄重燮 李存台 郑奉洙 奇圣钟 陈庸淑 于 2019-07-02 设计创作，主要内容包括：公开一种卷烟,包括：烟草棒；支撑段,位于烟草棒的下游末端；冷却段,位于支撑段的下游末端；和烟嘴,位于冷却段的下游末端。根据本实施例的卷烟,可包括包裹烟嘴的波纹状内包装纸和包裹波纹状内包装纸的外包装纸。(Disclosed is a cigarette comprising: a tobacco rod; a support section located at the downstream end of the tobacco rod; a cooling section located at a downstream end of the support section; and a mouthpiece located at the downstream end of the cooling section. The cigarette according to the present embodiment may include a corrugated inner wrapper wrapping the mouthpiece and an outer wrapper wrapping the corrugated inner wrapper.)

1. A cigarette, comprising:

a tobacco rod is arranged on the tobacco rod,

a support section located at a downstream end of the tobacco rod,

a cooling section at the downstream end of the support section, and

a mouthpiece located at a downstream end of the cooling section;

the cigarette also comprises a corrugated inner wrapping paper wrapping the cigarette holder and an outer wrapping paper wrapping the corrugated inner wrapping paper.

2. The cigarette according to claim 1,

and a channel for aerosol to move is formed between the corrugated inner wrapping paper and the outer wrapping paper.

3. The cigarette according to claim 1,

the width between the corrugations of the corrugated inner packaging paper is 1mm to 3mm, and the depth of the corrugations is 0.3mm to 1 mm.

4. The cigarette according to claim 1,

the corrugations of the corrugated inner wrapper are formed by an embossing roll.

5. The cigarette according to claim 1,

at least a portion of the cooling section is formed with a perforation through which external air flows into the inside of the cooling section.

6. The cigarette according to claim 5,

the outer wrapper wraps the cooling section,

the perforation is formed to penetrate the outer wrapper and the cooling section, and external air flows into the inside of the cooling section through the perforation.

7. A cigarette, comprising:

a tobacco rod is arranged on the tobacco rod,

a first support section located at a downstream end of the tobacco rod,

a second support section at a downstream end of the first support section and having an inner diameter greater than an inner diameter of the first support section, an

A mouthpiece located at a downstream end of the second support segment;

the cigarette also comprises a corrugated inner wrapping paper wrapping the cigarette holder and an outer wrapping paper wrapping the corrugated inner wrapping paper.

8. The cigarette according to claim 7,

at least a portion of the second support section is formed with a perforation through which external air flows into the inside of the second support section.

9. The cigarette according to claim 8,

the outer wrapper wraps the second support segment,

the perforation is formed to penetrate the outer wrapper and the second support section, and external air flows into the inside of the second support section through the perforation.

Technical Field

The present disclosure provides a cigarette comprising a tobacco rod and a filter rod.

Background

Recently, there is an increasing demand for alternative methods to overcome the disadvantages of ordinary cigarettes. For example, there is an increasing demand for methods of generating aerosols by heating aerosol generating substances within a cigarette rather than methods of generating aerosols by burning a cigarette.

The cigarette includes a filter which performs a function of filtering a specific component included in the aerosol or cooling the aerosol. When the filtering performance of the filter is too high, the aerosol transmission amount is reduced, and when the filtering performance is too low, there is a problem that a specific component included in the aerosol cannot be filtered.

Therefore, studies have been made on filters having appropriate performance by changing the components constituting the filter or by changing the structure of the filter.

Disclosure of Invention

Technical problem to be solved

A cigarette is provided, which comprises a corrugated inner wrapping paper wrapping a cigarette holder and an outer wrapping paper wrapping the corrugated inner wrapping paper. A channel for the movement of aerosol is arranged between the corrugated inner packing paper and the outer packing paper. The technical problem to be achieved by the present invention is not limited to the above-described technical problem, and other technical problems may be inferred from the following embodiments.

Means for solving the problems

Disclosed is a cigarette comprising: a tobacco rod; a support section located at the downstream end of the tobacco rod; a cooling section located at a downstream end of the support section; and a mouthpiece located at the downstream end of the cooling section.

The cigarette according to the present embodiment may include a corrugated inner wrapper wrapping the mouthpiece and an outer wrapper wrapping the corrugated inner wrapper.

Effects of the invention

According to the present invention, a channel is formed between the corrugated inner wrapper wrapping the mouthpiece and the outer wrapper wrapping the corrugated inner wrapper, and the aerosol can be delivered to a user through the channel, so that the delivery amount of the aerosol can be increased.

Drawings

Fig. 1 is a view showing an example of a cigarette insertion holder.

Fig. 2 is a configuration diagram showing an example of a cigarette.

Figure 3 is a cross-sectional view of an embodiment of a cigarette including a corrugated inner wrapper.

Figure 4 is a cross-sectional view of a mouthpiece including a corrugated inner wrapper according to an embodiment.

Figure 5 is a cross-sectional view of a cigarette including a perforated cooling section according to one embodiment.

Figure 6 is a cross-sectional view of an embodiment of a cigarette including a corrugated inner wrapper.

Detailed Description

In a first aspect of the present invention, there is provided a cigarette, comprising: a tobacco rod, a support segment located at a downstream end of the tobacco rod, a cooling segment located at a downstream end of the support segment, and a mouthpiece located at a downstream end of the cooling segment; the cigarette comprises a corrugated inner wrapping paper wrapping the cigarette holder and an outer wrapping paper wrapping the corrugated inner wrapping paper.

The second aspect of the present invention may provide a cigarette, comprising: a tobacco rod, a first support segment located at a downstream end of the tobacco rod, a second support segment located at a downstream end of the first support segment and having an inner diameter greater than an inner diameter of the first support segment, and a mouthpiece located at a downstream end of the second support segment; the cigarette comprises a corrugated inner wrapping paper wrapping the cigarette holder and an outer wrapping paper wrapping the corrugated inner wrapping paper.

Terms used in the embodiments are general terms that are currently widely used as much as possible in consideration of functions in the present invention, but they may be changed according to intentions of those skilled in the art, cases, or the emergence of new technologies. In addition, in a specific case, the applicant has arbitrarily selected some terms, but in this case, the meanings of the selected terms will be described in detail in the description part of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms as well as the overall contents of the present invention, and not only on the simple names of the terms.

Throughout the specification, a portion "including" a certain constituent element means that the portion may include other constituent elements, but does not exclude other constituent elements, unless there is a characteristic description contrary to the portion. In addition, terms such as "… … section" and "… … module" described in the specification refer to a unit for processing at least one function or operation, and may be implemented by hardware or software, or by a combination of hardware and software.

In the following embodiments, with respect to the terms "upstream" and "downstream", when a user inhales air with a cigarette, the portion where air enters the interior of the cigarette from the outside is "upstream", and the portion where air is discharged from the interior of the cigarette to the outside is "downstream". The terms "upstream" and "downstream" are terms used to denote relative positions between segments that make up a cigarette. The user will bite into the downstream end of the cigarette as it is being used. Furthermore, the term "end" may also be described as a "tip".

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments. The invention is not, however, limited to the embodiments described herein but may be embodied in various different forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a view showing an example of a cigarette insertion holder.

Referring to fig. 1, a cigarette 2 may be inserted into a holder 1. When cigarette 2 is inserted, heater 130 is located inside cigarette 2. Therefore, the aerosol-generating substance of the cigarette 2 is heated by the heated heater 130, thereby generating an aerosol.

The cigarette 2 may have a shape similar to a conventional combustion type cigarette. For example, the cigarette 2 may be divided into a first portion 140 containing an aerosol generating substance and a second portion 150 having a filter or the like.

The first portion 140 is integrally inserted into the inside of the holder 1, and the second portion 150 may be exposed to the outside. Alternatively, only a part of the first portion 140 may be inserted into the holder 1, or a part of the first portion 140 and a part of the second portion 150 may be inserted.

The user may inhale the aerosol while holding the second portion 150 in the mouth. At this time, the aerosol is generated by passing the external air through the first portion 140, and the generated aerosol is delivered to the user's mouth via the second portion 150.

The external air may flow in through at least one air passage formed on the holder 1. Alternatively, the outside air may be introduced through at least one hole (hole) formed in the surface of the cigarette 2.

Fig. 2 is a configuration diagram showing an example of a cigarette.

Referring to fig. 2, the cigarette 2 comprises a tobacco rod 210, a first filter stage 221, a cooling structure 222 and a second filter stage 223. The first part described with reference to figure 1 comprises a tobacco rod 210 and the second part comprises a first filter stage 221, a cooling structure 222 and a second filter stage 223.

Referring to fig. 2, the cigarette 2 may be wrapped by wrappers 231, 232, 233, 234, 235, 236. For example, the tobacco rod 210 is wrapped with a first wrapper 231 and the first filter segment 221 is wrapped with a second wrapper 232. In addition, the cooling structure 222 is wrapped with a third wrapper 233 and the second filter segment 223 is wrapped with a fourth wrapper 234.

A fifth packing paper 235 may surround the outer contours of the first, second and third packing papers 231, 232 and 233. In other words, the tobacco rod 210, the first filter stage 221 and the cooling structure 222 of the cigarette 2 may be wrapped again by the fifth wrapper 235. Additionally, a sixth wrapper 236 may surround at least a portion of the fifth wrapper 235 and the outer contour of the fourth wrapper 234. In other words, at least a portion of the cooling structure 222 and the second filter segment 223 of the cigarette 2 may be wrapped again by the sixth wrapper 236.

First wrapper 231, second wrapper 232, fifth wrapper 235 and sixth wrapper 236 may be made of common roll paper. For example, the first wrapper 231, the second wrapper 232, the fifth wrapper 235, and the sixth wrapper 236 may be porous roll paper or non-porous roll paper. For example, the thickness of the first wrapper 231 may be about 61 μm, the porosity may be about 15CU, the thickness of the second wrapper 232 may be about 63 μm, and the porosity may be about 15CU, but is not limited thereto. Further, the thickness of the fifth packing sheet 235 may be about 66 μm, the porosity may be about 10CU, the thickness of the sixth packing sheet 236 may be 66 μm, and the porosity may be about 17CU, but is not limited thereto.

In addition, the inner side of the first wrapper 231 and/or the second wrapper 232 may further include an aluminum foil.

The third wrapper 233 and the fourth wrapper 234 may be made of hard roll paper. For example, the third wrapper 233 may have a thickness of about 158 μm and a porosity of about 33CU, the fourth wrapper 234 may have a thickness of about 155 μm and a porosity of about 46CU, but is not limited thereto.

The fifth wrapper 235 and the sixth wrapper 236 may have a prescribed substance added therein. Here, the predetermined substance may be, but is not limited to, silicone resin. For example. The silicone resin has the following characteristics: heat resistance, i.e., less change with temperature change; oxidation resistance, i.e. not oxidized; resistance to various drugs; water repellency to water, electrical insulation, and the like. However, even if it is not silicone, a substance having the above-described characteristics may be applied (or smeared) to the fifth and sixth wrappers 235 and 236 without limitation.

The fifth wrapper 235 and the sixth wrapper 236 prevent the burning of the cigarette 2. For example, if the tobacco rod 210 is heated by the heater 130, the cigarette 2 may burn. Specifically, the cigarette 2 may burn when the temperature rises above the combustion point of any of the substances contained in the tobacco rod 210. Even in this case, since the fifth wrapper 235 and the sixth wrapper 236 contain incombustible matter, the phenomenon that the cigarette 2 burns can be prevented.

In addition, the fifth packing paper 235 can prevent the holder 1 from being contaminated by substances generated in the cigarettes 2. By the user's smoking, a liquid substance can be created within the cigarette 2. For example, the aerosol generated in the cigarette 2 is cooled by the outside air, so that a liquid substance (e.g., moisture, etc.) can be generated. Since the tobacco rod 210 and/or the first filter stage 221 are/is wrapped by the fifth wrapper 235, liquid substances generated within the cigarette 2 can be prevented from leaking outside the cigarette 2. Therefore, the phenomenon that the inside of the holder 1 is contaminated by the liquid material generated in the cigarette 2 can be prevented.

The cigarette 2 may have a diameter in the range of 5mm to 9mm and a length of about 48mm, but is not limited thereto. For example, the tobacco rod 210 may have a length of about 12mm, the first filter stage 221 may have a length of about 10mm, the cooling structure 222 may have a length of about 14mm, and the second filter stage 223 may have a length of about 12mm, but is not limited thereto.

The structure of the cigarette 2 shown in fig. 2 is merely an example, and a part of the structure may be omitted. For example, more than one of the first filter segment 221, the cooling structure 222, and the second filter segment 223 in the cigarette 2 may be omitted.

The tobacco rod 210 contains an aerosol generating substance. For example, the aerosol-generating substance may comprise at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.

In addition, the tobacco rod 210 may include other additives such as flavoring agents, humectants, and/or organic acids (organic acids). For example, the flavoring agent may include licorice, sucrose, fructose syrup, ISO sweetener (isosweet), cocoa, lavender, cinnamon, cardamom, celery, fenugreek, bitter orange peel, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, cinnamon, caraway, cognac brandy, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, caraway, coffee, or the like. Additionally, the humectant may include glycerin or propylene glycol, and the like.

As an example, the tobacco rod 210 may be filled with reconstituted tobacco sheet (reconstituted tobaco sheet).

As another example, the tobacco rod 210 may be filled with tobacco leaves. Here, the tobacco leaves may be produced by cutting reconstituted tobacco sheets.

As another example, the tobacco rod 310 may be filled with a plurality of tobacco filaments obtained by shredding a reconstituted tobacco sheet. For example, the tobacco rod 310 may be formed from a plurality of tobacco filaments combined in the same direction (parallel) or randomly.

For example, reconstituted tobacco sheets can be made by the following process. First, a tobacco raw material is pulverized to produce a slurry in which an aerosol-generating substance (e.g., glycerin, propylene glycol, etc.), a flavoring liquid, a binder (e.g., guar gum, xanthan gum, Carboxymethyl cellulose (CMC), etc.), water, etc. are mixed, and then the slurry is used to form reconstituted tobacco sheets. In the production of the pulp, natural pulp or cellulose may be added, and one or more binders may be mixed and used. Alternatively, strips or fine cut dried reconstituted tobacco sheets can be cut to produce tobacco filaments.

The tobacco material may be tobacco leaf fragments, tobacco stems, and/or tobacco fines generated during processing of tobacco. In addition, other additives such as wood cellulose fibers may be included in the reconstituted tobacco sheet.

5% to 40% aerosol generating material may be added to the slurry, and 2% to 35% aerosol generating material may remain in the reconstituted tobacco sheet. Preferably, 5% to 30% of the aerosol-generating substance may remain in the reconstituted tobacco sheet.

In addition, before the process of wrapping the tobacco rod 210 by the first wrapping paper 231, a flavoring liquid such as peppermint or humectant may be added to the center of the tobacco rod 210 by spraying.

The first filter segment 221 may be a cellulose acetate filter. For example, the first filter stage 221 may be a tubular structure with a hollow interior. The length of the first filter stage 221 may take a suitable length in the range of 4mm to 30mm, but is not limited thereto. Preferably, the length of the first filtering section 221 may be 10mm, but is not limited thereto.

The diameter of the hollow included in the first filtering section 221 may take a suitable diameter in the range of 2mm to 4.5mm, but is not limited thereto.

In manufacturing the first filter stage 221, the hardness of the first filter stage 221 may be adjusted by adjusting the content of the plasticizer.

In addition, the first filtering section 221 may be manufactured by inserting a structure of membranes, tubes, etc. of the same or different materials into the inside (e.g., hollow).

The first filter stage 221 may be manufactured using cellulose acetate. This prevents the substance inside the tobacco rod 210 from being pushed back when the heater 130 is inserted, and thus the aerosol cooling effect can be produced.

The cooling structure 222 cools the aerosol generated by the heater 130 heating the tobacco rod 210. Thus, the user can inhale the aerosol cooled to an appropriate temperature.

The length or diameter of the cooling structure 222 may be determined in various ways depending on the shape of the cigarette 2. For example, the length of the cooling structure 222 may be suitably employed in the range of 7mm to 20 mm. Preferably, the length of the cooling structure 222 may be about 14mm, but is not limited thereto.

The cooling structure 222 may be made by weaving polymer fibers. In this case, the fiber made of the polymer may be coated with the flavoring liquid. Alternatively, the cooling structure 222 may be fabricated by weaving separate fibers coated with the flavored liquid and fibers made of a polymer at the same time.

Alternatively, the cooling structure 222 may be formed by a rolled polymer sheet.

The polymer may be made of a material selected from the group consisting of Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), Cellulose Acetate (CA), and aluminum foil.

The cooling structure 222 is formed by woven polymer fibers or crimped sheets, and thus the cooling structure 222 may include a single or multiple channels extending longitudinally. Here, the channel refers to a passage through which gas (e.g., air or aerosol) passes.

For example, the cooling structure 222, which is comprised of a rolled polymer sheet, may be formed from a material having a thickness between about 5 μm and about 300 μm, e.g., between about 10 μm and about 250 μm. Additionally, the entire surface area of the cooling structure 222 may be about 300mm²A/mm and about 1000mm²And/mm. In addition, the aerosol-cooling element may have a specific surface area of about 10mm²Per mg and about 100mm²Between/mg of material.

Alternatively, the cooling structure 222 may include threads (threads) containing volatile fragrance components. Here, the volatile flavor component may be menthol, but is not limited thereto. For example, to provide 1.5mg or more of menthol to the cooling structure 222, the thread may be filled with a sufficient amount of menthol.

The second filter segment 223 may be a cellulose acetate filter. The length of the second filter segment 223 may suitably be in the range of 4mm to 20 mm. For example, the length of the second filtering segment 223 may be about 12mm, but is not limited thereto.

In the process of manufacturing the second filter segment 223, it may also be manufactured to spray the flavoring liquid to the second filter segment 223 so that the flavor is generated. Alternatively, a separate fiber coated with a flavoring liquid may be inserted into the inside of the second filtering segment 223. The aerosol generated in the tobacco rod 210 is cooled by the cooling structure 222 and the cooled aerosol is delivered to the user through the second filter segment 223. Thus, the addition of a perfuming element to the second filter stage 223 produces an effect of increased longevity of the scent delivered to the user.

Figure 3 is a cross-sectional view of an embodiment of a cigarette including a corrugated inner wrapper.

Referring to fig. 3, a cigarette 300 may include a tobacco rod 310, a support segment 320, a cooling segment 330, and a mouthpiece 340. This is merely an example, and the cigarette 300 may include other structures in addition to the structures (310 to 340) shown in fig. 3, or may omit a part of the structures (310 to 340) shown in fig. 3.

In an embodiment, the support segment 320 may be located at a downstream end of the tobacco rod 310, the cooling segment 330 may be located at a downstream end of the support segment 320, and the mouthpiece 340 may be located at a downstream end of the cooling segment 330, however, the configuration of the segments constituting the cigarette 300 is not limited thereto.

The tobacco rod 310 may be made of tobacco sheet (sheet) or tobacco filament (strand). Alternatively, the tobacco rod 310 may be made of tobacco leaves obtained by cutting tobacco pieces into small pieces. The tobacco rod 310 may have a cylindrical shape, and when the tobacco rod 310 is heated, smoke and/or aerosol may be generated.

The tobacco rod 310 may contain an aerosol generating substance, a flavoring agent, a humectant, and/or an additive substance such as an organic acid (organic acid), a flavoring liquid such as peppermint smoke or a humectant, but is not limited thereto.

The support section 320 may be a cellulose acetate filter. For example, support section 320 may be a tubular structure with a hollow interior. The length of the support section 320 may take a suitable length in the range of 4mm to 30mm, but is not limited thereto. Preferably, the length of the support section 320 may be 10mm, but is not limited thereto.

The diameter of the hollow included in the support section 320 may take a suitable diameter in the range of 3mm to 4.5mm, but is not limited thereto. In manufacturing the support section 320, the hardness of the support section 320 may be adjusted by adjusting the content of the plasticizer.

To prevent the size of the support section 320 from decreasing over time, the periphery of the support section 320 may be wrapped with a wrapper. Thus, the support section 320 may be easily engaged with other structures.

In addition, the support section 320 may be manufactured by inserting a structure of a membrane, a tube, etc., of the same or different material inside (e.g., hollow).

The cooling section 330 cools the aerosol generated by heating the tobacco rod 310 by the heater. Accordingly, the user can inhale the aerosol cooled to an appropriate temperature when inhaling the cigarette 300.

The length or diameter of the cooling section 330 may be determined in various ways depending on the shape of the cigarette 300. For example, the length of the cooling section 330 may be suitably employed in the range of 7mm to 30 mm. Preferably, the length of the cooling section 330 may be about 14mm, but is not limited thereto.

The cooling section 330 may be made of pure polylactic acid, or may be made in combination with other degradable polymers and polylactic acid. For example, the cooling section 330 may be made by extrusion or weaving of fibers. To increase the surface area per unit area (i.e., the surface area in contact with the aerosol), the cooling section 330 may be fabricated in various shapes.

For example, the cooling section 330 may be made by weaving fibers made of polylactic acid. In this case, the fiber made of polylactic acid may be coated with the flavoring liquid. Alternatively, the cooling section 330 is made by using a separate fiber coated with the flavoring liquid together with a fiber made of polylactic acid.

The mouthpiece 340 may be a cellulose acetate filter. For example, the mouthpiece 340 may be made of a recess filter, but is not limited thereto. The length of the mouthpiece 340 may suitably be employed in the range of 4mm to 30 mm. For example, the mouthpiece 340 may be about 12mm in length, but is not limited thereto.

In the process of making the mouthpiece 340, the flavoring may be made by spraying the flavoring liquid into the mouthpiece 340. Alternatively, a separate fiber coated with a flavourant may be inserted into the interior of the mouthpiece 340. The aerosol generated by the heated tobacco rod 310 is cooled by the cooling segment 330 and the cooled aerosol is delivered to the user through the mouthpiece 340. Thus, with the addition of a perfuming element in the mouthpiece 340, an effect can be produced that enhances the longevity of the scent delivered to the user. Additionally, the mouthpiece 340 may include at least one capsule. Here, the capsule may have a structure in which a liquid containing a perfume is enclosed by a film. For example, the capsule may have a spherical or cylindrical shape.

In one embodiment, the tobacco rod 310, support segment 320, cooling segment 330 and mouthpiece 340 may be wrapped with separate wrappers. In addition, the entire cigarette 300 may be double wrapped with another wrapper surrounding the periphery of the wrapper that respectively encases the tobacco rod 310, the support segment 320, the cooling segment 330, and the mouthpiece 340. However, the manner of wrapping the cigarette 300 and the portions constituting the cigarette 300 by the wrapping paper is not limited thereto.

Referring to figure 3, the mouthpiece 340 may be double wrapped. Specifically, the cellulose acetate 341 of the mouthpiece 340 may be wrapped with a corrugated inner wrapper 342, and the corrugated inner wrapper 342 may be wrapped with an outer wrapper 343.

Due to the corrugation of the corrugated inner wrapper 342, a channel 344 for movement of aerosol may be formed between the corrugated inner wrapper 342 and the outer wrapper 343 wrapping it. That is, due to the corrugated inner wrapper 342, a channel 344 for movement of aerosol may be formed around the circumferential surface of the mouthpiece 340.

As the tobacco rod 310 is heated, the generated aerosol is delivered to the user sequentially through the plurality of segments (e.g., support segment 320, cooling segment 330, and mouthpiece 340). When a user inhales the cigarette 300, aerosol may not be sufficiently delivered to the user due to the inhalation Resistance (RTD) caused by the segments that make up the cigarette 300. According to the present invention, a passage 344 is formed between the corrugated inner wrapper 342 wrapping the cellulose acetate 341 of the mouthpiece 340 and the outer wrapper 343 wrapping the corrugated inner wrapper 342, and the aerosol is delivered to the user through the passage 344, so that the delivery amount of the aerosol can be increased.

In one embodiment, the width between the corrugations of the corrugated inner wrapper 342 may be 0.1mm to 5mm, and the depth of the corrugations may be 0.1mm to 5 mm. Preferably, the width between the corrugations of the corrugated inner wrapper 342 may be 1mm to 3mm, and the depth of the corrugations may be 0.3mm to 1 mm.

In addition, the corrugation of the corrugated inner packing paper 342 may be formed by an embossing roll. The width between the corrugations and the depth of the corrugations of the corrugated inner wrapper 342 can be changed according to the width between the uneven portions of the embossing roller, the depth of the uneven portions, and the embossing strength.

Further, the outer wrapper 343 may wrap only the mouthpiece 340, or may wrap at least one other segment (e.g., the cooling segment 330) that makes up the cigarette 300 in addition to the mouthpiece 340, such that the mouthpiece 340 may be engaged with the other segment.

Figure 4 is a cross-sectional view of a mouthpiece including a corrugated inner wrapper according to an embodiment.

Referring to figure 4, the mouthpiece 400 may comprise cellulose acetate 410, corrugated inner wrapper 420 and outer wrapper 430. As shown in fig. 4, the corrugated inner wrapper 420 may wrap the cellulose acetate 410 in a state of wrapping the periphery of the cellulose acetate 410. In addition, the cigarette holder 400 can be double-wrapped by wrapping the corrugated inner wrapper 420 with the outer wrapper 430.

Due to the corrugation of the corrugated inner wrapper 420, a passage for movement of aerosol may be formed between the corrugated inner wrapper 420 and the outer wrapper 430 wrapping it. That is, due to the corrugated inner wrapper 420, a channel through which aerosol moves may be formed around the circumferential surface of the mouthpiece 400.

That is, when the aerosol generating substance is heated, the generated aerosol is transferred to the user not only through the passage inside the cellulose acetate 410 but also through the passage formed between the corrugated inner wrapper 420 and the outer wrapper 430, so that the transfer amount of the aerosol may be increased.

The corrugation of the corrugated inner wrap 420 may be formed by an embossing roller, and the width 421 between corrugations and the depth 422 of corrugations may be determined according to the width between the concave and convex portions of the embossing roller, the depth of the concave and convex portions, the embossing strength, and the like.

In one embodiment, the width 421 between the corrugations of the corrugated inner wrapper 420 may be 0.1mm to 5mm, and the depth 422 of the corrugations may be 0.1mm to 5 mm. Preferably, the width 421 between the corrugations of the corrugated inner wrapper 420 may be 1mm to 3mm, and the depth 422 of the corrugations may be 0.3mm to 1 mm.

Further, the cross section of the corrugation of the corrugated inner packing paper 420 is not limited to the example shown in fig. 4. The cross section of the corrugation of the corrugated inner wrapper 420 may be semicircular and polygonal, such as triangular, quadrangular, trapezoidal.

Figure 5 is a cross-sectional view of a cigarette including a perforated cooling section according to one embodiment.

Referring to fig. 5, a cigarette 500 may include a tobacco rod 510, a support segment 520, a cooling segment 530, and a mouthpiece 540. This is merely an example, and the cigarette 500 may include other structures in addition to the structures (510 to 540) shown in fig. 5, or some of the structures (510 to 540) shown in fig. 5 may be omitted.

Hereinafter, for convenience of explanation, the description overlapping with fig. 3 is omitted.

At least a portion of the cooling section 530 may be formed with a perforation 531. In an embodiment, the perforations 531 may be formed at a location spaced 5mm to 25mm, preferably 15mm to 20mm, upstream from the downstream end of the cooling section 530. In addition, perforations 531 may consist of 4 to 10 holes (holes), for example, perforations 531 may consist of 4, 6, or 8 holes. However, the position of the penetration holes 531 and the number of holes constituting the penetration holes 531 are not limited thereto.

As the user inhales the cigarette 500, external air may flow into the interior of the cooling segment 530 through the perforations 531 and move toward the mouthpiece 540. The air flowing from the outside through the perforations 531 may merge with the air flowing from the end of the tobacco rod 510.

A portion of the air flowing in from the outside through the perforation 531 is transferred to the user through a channel formed inside the cellulose acetate of the mouthpiece 540, and another portion may be transferred to the user through a channel formed between the corrugated wrapper and the outer wrapper inside the mouthpiece 540.

When the user inhales the cigarette 500, in addition to the air introduced from the end of the tobacco rod 510 being delivered to the user, the air introduced through the perforations 531 of the cooling section 530 is also delivered to the user, so that the delivery amount of the aerosol can be increased.

Figure 6 is a cross-sectional view of an embodiment of a cigarette including a corrugated inner wrapper.

Referring to fig. 6, a cigarette 600 may include a tobacco rod 610, a first support segment 620, a second support segment 630, and a mouthpiece 640. This is merely an example, and the cigarette 600 may include other structures in addition to the structures (610 to 640) shown in fig. 6, or may omit a part of the structures (610 to 640) shown in fig. 6.

Hereinafter, for convenience of explanation, the description overlapping with fig. 3 is omitted.

In an embodiment, the first support segment 620 may be located at a downstream end of the tobacco rod 610, the second support segment 630 may be located at a downstream end of the first support segment 620, and the mouthpiece 640 may be located at a downstream end of the second support segment 630, without limitation to the configuration of the segments comprising the cigarette 600.

The first and second support sections 620, 630 may be tubular structures that are hollow inside. The second support section 630 may have an inner diameter greater than that of the first support section 620. In one embodiment, the first support section 620 may have a diameter of 7mm to 9mm and an inner diameter of about 2.0mm to 4.5 mm. The second support section 630 may have a diameter of 7mm to 9mm and an inner diameter of about 3.0mm to 5.5mm, for example, 4.0 mm.

Since the inner diameter of the second support section 630 is greater than that of the first support section 620, the air passing through the hollow of the first support section 620 may flow into the hollow of the second support section 630 and be diffused. The air moving from the hollow of the first support section 620 to the hollow of the second support section 630 and diffusing has a reduced tendency to flow in the downstream direction of the cigarette 600, so that the contact area and the contact time with the external air flowing in through the perforation 631 can be increased. Therefore, the cooling effect can be improved.

A perforation 631 may be formed at least a portion of the second support section 630. The hollow inside of the second support section 630 may be surrounded by a wall made of cellulose acetate, and the perforation 631 may be formed at the wall made of cellulose acetate.

In an embodiment, the perforations 631 may be formed at positions spaced 5mm to 25mm, preferably 15mm to 20mm, in an upstream direction from the downstream end of the second support section 630. In addition, the perforation 631 may consist of 4 to 10 holes (holes), for example, the perforation 631 may consist of 4, 6, or 8 holes. However, the position of the perforation 631 and the number of holes constituting the perforation 631 are not limited thereto.

As the user inhales the cigarette 600, outside air may flow into the hollow of the second support section 630 through the perforations 631 and move toward the mouthpiece 640. The air flowing from the outside through the perforation holes 631 may merge with the air flowing from the end of the tobacco rod 610.

A portion of the air flowing in from the outside through the perforation 631 may be transferred to the user through a channel formed inside the cellulose acetate of the mouthpiece 640, and another portion may be transferred to the user through a channel formed between the corrugated wrapper and the outer wrapper inside the mouthpiece 640.

When a user inhales the cigarette 600, in addition to the air flowing in from the end of the tobacco rod 610 being delivered to the user, the air flowing in through the perforations 631 of the second support section 630 is also delivered to the user, thereby increasing the delivery of the aerosol.

It will be appreciated by those skilled in the art to which the embodiment relates that the present invention may be modified to implement the embodiments without departing from the essential characteristics set forth above. Accordingly, the disclosed methods should not be viewed from a limiting perspective, but rather from an illustrative perspective. The scope of the present invention is indicated by the claims rather than the above description, and all differences within the equivalent scope to the claims should be construed as being included in the present invention.